Offsetting The Ppi Center - Simrad R5000 Operator's Manual

True motion
In true motion your vessel and all moving targets move across the Radar PPI as you travel. All
stationary objects remain in a fixed position. When the vessel's symbol reaches 75% of the
PPI radius (A), the radar image is redrawn with the vessel symbol re-positioned (B) 180°
opposite the current heading bearing.
A
When true motion is selected, the true motion reset option is available from the menu. This
allows for manually resetting the radar image and vessel symbol to its starting position.
Ú Note:
True motion is only available when the PPI is in either north up or course up
orientation mode.

Offsetting the PPI center

You can set the antenna position origin to a different location on the radar PPI. The options
described in the next sections are available.
PPI center: Center
Ú Note:
The bearing scale is according to the Consistent Common Reference Point (CCRP),
while the offset sets the radar antenna position on the PPI. The maximum off-centering
allowed is 75% of the radius at the current range. This may result in the CCRP being
outside of the bearing scale. In such cases the measurements are still taken by the CCRP
and the bearing scale is compressed accordingly.
Re-setting the PPI center
In relative motion, you can reset the offset by using the reset offset option in the menu.
In true motion, the offset will be removed when the radar image is automatically redrawn.
You can manually remove the offset by using the reset true motion option in the menu.
Menu option - Relative motion
Look ahead
The Look ahead option is used to maximize the view ahead of the vessel. When selected the
PPI center is placed at 70% of the radius of the PPI, 180° opposite the top of the display.
Ú Note:
The look ahead option is only available for heading up radar orientation.
Radar view options | R5000 Operator manual
B
PPI center: Look Ahead
Menu option - True motion
PPI Center: Offset
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